Effects of Multi-Axial Compression on the Mechanical and Fretting Wear Properties of Ti-45Nb Alloys
Biocompatible β-type Ti-45Nb alloy with a low elastic modulus is promising in alleviating the stress shielding effect of Ti-based hard-tissue replacement implants. In this work, the ultra-fine-grained (UFG) microstructures with different grain sizes were prepared by multi-axial compression (MAC) pro...
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| Format: | Article |
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MDPI AG
2021-03-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/11/3/454 |
| _version_ | 1797541985812217856 |
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| author | Zhuoqing Xu Nan Hu Yuan Lu Xiaochang Xu |
| author_facet | Zhuoqing Xu Nan Hu Yuan Lu Xiaochang Xu |
| author_sort | Zhuoqing Xu |
| collection | DOAJ |
| description | Biocompatible β-type Ti-45Nb alloy with a low elastic modulus is promising in alleviating the stress shielding effect of Ti-based hard-tissue replacement implants. In this work, the ultra-fine-grained (UFG) microstructures with different grain sizes were prepared by multi-axial compression (MAC) processing of Ti-45Nb alloys, and the mechanical properties and the fretting wear properties of Ti-45Nb alloys in different grain sizes were investigated. The results show that the yield strength and ultimate tensile strength of the sample processed by 27 passes MAC increase by 76% and 91%, respectively, with an elongation of more than 9%. After MAC processing, the friction coefficient and volume wear rate gradually decrease. In addition, before MAC processing, the Ti-45Nb sample shows a wear mechanism of severe adhesive wear, oxidative wear and fatigue delamination; while after MAC processing, the wear mechanism switches to abrasive wear and slight adhesive wear with slight oxidative wear, indicating that grain refinement helps to improve the anti-fretting properties of Ti-45Nb alloys. |
| first_indexed | 2024-03-10T13:23:16Z |
| format | Article |
| id | doaj.art-7d69e267ea5841a38277df3494af928f |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-10T13:23:16Z |
| publishDate | 2021-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-7d69e267ea5841a38277df3494af928f2023-11-21T09:51:15ZengMDPI AGMetals2075-47012021-03-0111345410.3390/met11030454Effects of Multi-Axial Compression on the Mechanical and Fretting Wear Properties of Ti-45Nb AlloysZhuoqing Xu0Nan Hu1Yuan Lu2Xiaochang Xu3School of Materials Science and Engineering, Central South University, Changsha 410083, ChinaNational Innovation Center for Advanced Medical Devices, Shenzhen 518100, ChinaSchool of Materials Science and Engineering, Central South University, Changsha 410083, ChinaSchool of Materials Science and Engineering, Central South University, Changsha 410083, ChinaBiocompatible β-type Ti-45Nb alloy with a low elastic modulus is promising in alleviating the stress shielding effect of Ti-based hard-tissue replacement implants. In this work, the ultra-fine-grained (UFG) microstructures with different grain sizes were prepared by multi-axial compression (MAC) processing of Ti-45Nb alloys, and the mechanical properties and the fretting wear properties of Ti-45Nb alloys in different grain sizes were investigated. The results show that the yield strength and ultimate tensile strength of the sample processed by 27 passes MAC increase by 76% and 91%, respectively, with an elongation of more than 9%. After MAC processing, the friction coefficient and volume wear rate gradually decrease. In addition, before MAC processing, the Ti-45Nb sample shows a wear mechanism of severe adhesive wear, oxidative wear and fatigue delamination; while after MAC processing, the wear mechanism switches to abrasive wear and slight adhesive wear with slight oxidative wear, indicating that grain refinement helps to improve the anti-fretting properties of Ti-45Nb alloys.https://www.mdpi.com/2075-4701/11/3/454severe plastic deformationTi-45Nb alloysimplantsmechanical propertiesfretting wear |
| spellingShingle | Zhuoqing Xu Nan Hu Yuan Lu Xiaochang Xu Effects of Multi-Axial Compression on the Mechanical and Fretting Wear Properties of Ti-45Nb Alloys Metals severe plastic deformation Ti-45Nb alloys implants mechanical properties fretting wear |
| title | Effects of Multi-Axial Compression on the Mechanical and Fretting Wear Properties of Ti-45Nb Alloys |
| title_full | Effects of Multi-Axial Compression on the Mechanical and Fretting Wear Properties of Ti-45Nb Alloys |
| title_fullStr | Effects of Multi-Axial Compression on the Mechanical and Fretting Wear Properties of Ti-45Nb Alloys |
| title_full_unstemmed | Effects of Multi-Axial Compression on the Mechanical and Fretting Wear Properties of Ti-45Nb Alloys |
| title_short | Effects of Multi-Axial Compression on the Mechanical and Fretting Wear Properties of Ti-45Nb Alloys |
| title_sort | effects of multi axial compression on the mechanical and fretting wear properties of ti 45nb alloys |
| topic | severe plastic deformation Ti-45Nb alloys implants mechanical properties fretting wear |
| url | https://www.mdpi.com/2075-4701/11/3/454 |
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